
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script type="text/javascript" src="../js/react.development.js"></script>
  <script type="text/javascript" src="../js/react-dom.production.min.js"></script>
  <script type="text/javascript" src="../js/babel.min.js"></script>
  <title>类式组件</title>
</head>
<body>
  <div id="test"></div>
  <script type="text/babel">
    class Weather extends React.Component {

      state = { isHot: true }

      render() {
        return <h1 onClick={this.changeWeather}>今天天气很{this.state.isHot ? '炎热' : '凉爽'}</h1>
      }

      changeWeather = ()=>{
        // this.state.isHot = !this.state.isHot
        console.log(this.state.isHot)
        this.setState({ isHot: !this.state.isHot })
      }
    }

    ReactDOM.render(<Weather/>, document.getElementById('test'))

  
  </script>
</body>
</html>